body {
  width: 100%;
  min-width: 320px;
  max-width: 640px;
  margin: 0 auto;
  font-family: -apple-stytem, Helvetica, sans-serif;
  color: #666;
  line-height: 1.5;
}

.app {
  height: 45px;
}

a {
  color: #666;
  text-decoration: none;
  font-size: 14px;
}

img {
  vertical-align: top;
}

.app ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.app ul li {
  float: left;
  height: 45px;
  background-color: #333333;
  text-align: center;
  line-height: 45px;
  color: white;
}

.app ul li:nth-child(1) {
  width: 8%;
}

.app ul li:nth-child(1) img {
  width: 10px;
  vertical-align: middle;
}

.app ul li:nth-child(2) {
  width: 10%;
}

.app ul li:nth-child(2) img {
  width: 30px;
  vertical-align: middle;
}

.app ul li:nth-child(3) {
  width: 57%;
}

.app ul li:nth-child(4) {
  width: 25%;
  background-color: red;
}

.search-wrap {
  position: fixed;
  height: 44px;
  overflow: hidden;
  min-width: 320px;
  max-width: 640px;
  width: 100%;
  z-index: 999999;
}

.search-wrap .search-btn {
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 44px;
}

.search-wrap .search-btn::before {
  content: "";
  display: block;
  width: 20px;
  height: 18px;
  background: url(../images/s-btn.png);
  background-size: 20px 18px;
  margin: 14px 0 0 15px;
}

.search-wrap .search {
  position: relative;
  height: 30px;
  background-color: #fff;
  margin: 0 50px;
  border-radius: 10px;
  margin-top: 7px;
}

.search-wrap .search-login {
  position: absolute;
  right: 0;
  top: 0;
  width: 40px;
  height: 44px;
  line-height: 44px;
  color: white;
}
/* 复制swiper css样式 */

.swiper-container {
  width: 100%;
  height: 100%;
}

.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;
  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}

.swiper-pagination-bullet {
  background: #fff!important;
}
.jd-icon {
  width: 20px;
  height: 15px;
  position: absolute;
  top: 8px;
  left: 13px;
  background-color: pink;
  background: url(../images/jd.png) no-repeat;
  background-size: 20px 15px;
}

.jd-icon::after {
  position: absolute;
  right: -10px;
  content: "";
  display: block;
  width: 1px;
  height: 15px;
  background-color: #ccc;
}

.sou {
  position: absolute;
  top: 8px;
  left: 50px;
  width: 18px;
  height: 15px;
  background-color: pink;
  background: url(../images/jd-sprites.png) no-repeat -81px 0;
  background-size: 200px;
}

.slider img {
  width: 100%;
}

.brand {
  overflow: hidden;
  border-radius: 10px 10px 0 0;
}

.brand div {
  float: left;
  width: 33.333333333333%;
}

.brand div img {
  width: 100%;
}

nav a {
  float: left;
  width: 20%;
  text-align: center;
}

nav a img {
  width: 40px;
  margin: 10px 0;
}

nav a span {
  display: block;
}

.news a {
  float: left;
  box-sizing: border-box;
}

.news {
  margin-top: 20px;
}

.news img {
  width: 100%
}

.news a:nth-child(1) {
  width: 50%;
}

.news a:nth-child(2) {
  width: 25%;
  border-left: 1px solid #ccc;
}

.news a:nth-child(3) {
  width: 25%;
}